bend over backwards
Also, lean over backwards. Exert oneself to the fullest extent, as in Dad bent over backwards so as not to embarrass Stasia's new boyfriend. This phrase transfers the gymnastic feat of a backbend to taking a great deal of trouble for someone or something. [c. 1920] Also see under fall all over.
Words nearby bend over backwards
benchwarmer,
benchy,
bend,
bend dexter,
bend one's elbow,
bend over backwards,
bend sinister,
bend someone's ear,
benda,
bendectin,
bended